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Silver artefacts get tarnished in air due to the formation of

June 1, 2025 by rawan239

Silver artefacts get tarnished in air due to the formation of

silver chloride

silver oxide

silver sulphide

silver sulphate

This question was previously asked in

UPSC NDA-2 – 2022

Download PDF Attempt Online

Silver artefacts get tarnished in air due to the formation of silver sulphide.

Silver tarnishes when it reacts with sulfur compounds present in the air, such as hydrogen sulfide (H2S). This reaction forms a black layer of silver sulfide (Ag2S) on the surface of the silver.

The reaction is 2Ag(s) + H2S(g) -> Ag2S(s) + H2(g). Tarnishing is accelerated in polluted air or environments with higher concentrations of sulfur gases.

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